Mark Bradford’s 150 Portrait Tone, a mural-size composition that contains elements of both abstraction and realism, is based on an idea for a work that the artist conceived after the fatal shooting of Philando Castile by a police officer in Saint Paul, Minnesota.   Mondays, Tuesdays, Thursdays 11:00 a.m. – 5:00 p.m.,  Fridays 11:00 a.m. – 8:00 p.m.,  Saturdays & Sundays 10:00 a.m. – 7:00 p.m.